diff --git a/src/modules/graphics/opengl/wrap_Shader.cpp b/src/modules/graphics/opengl/wrap_Shader.cpp
index a5647706a..a2cb1eb45 100644
--- a/src/modules/graphics/opengl/wrap_Shader.cpp
+++ b/src/modules/graphics/opengl/wrap_Shader.cpp
@@ -144,7 +144,7 @@ int w_Shader_sendInt(lua_State *L)
 	delete[] values;
 
 	if (should_error)
-		return lua_error(L);
+		return luaL_error(L, "%s", lua_tostring(L, -1));
 
 	return 0;
 }
@@ -185,7 +185,7 @@ int w_Shader_sendFloat(lua_State *L)
 	delete[] values;
 
 	if (should_error)
-		return lua_error(L);
+		return luaL_error(L, "%s", lua_tostring(L, -1));
 
 	return 0;
 }
@@ -248,7 +248,7 @@ int w_Shader_sendMatrix(lua_State *L)
 	delete[] values;
 
 	if (should_error)
-		return lua_error(L);
+		return luaL_error(L, "%s", lua_tostring(L, -1));
 
 	return 0;
 }
diff --git a/src/modules/math/wrap_Math.cpp b/src/modules/math/wrap_Math.cpp
index 05d0a33b7..029b313e4 100644
--- a/src/modules/math/wrap_Math.cpp
+++ b/src/modules/math/wrap_Math.cpp
@@ -86,7 +86,7 @@ int w_newRandomGenerator(lua_State *L)
 		}
 
 		if (should_error)
-			return lua_error(L);
+			return luaL_error(L, "%s", lua_tostring(L, -1));
 	}
 
 	luax_pushtype(L, "RandomGenerator", MATH_RANDOM_GENERATOR_T, t);